Great ideal for business,conference,office,meeting,working,restaurant,school,test field,business travel and many more! Sports backpack,made of ultralight waterproof nylon fabric.Adjustable shoulder strap,chest strap and waist strap to fit your need.With whistle design on the chest strap.Ergonomic design on the back for maximum breathability and comfort.Reflective strips for safe riding at night.Rain cover included.Suitable for outdoor activities like cycling,rock-climbing and hiking,etc.Showing your brand wherever you go! Measuring 12.6*18.5 inch, this custom nylon hiking backpack cycling bag with water bladder. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Eco-friendly material, reusable, foldable for storage.